JEE Main & Advanced Chemistry GOC Question Bank Critical Thinking

  • question_answer The C - C bond length of the following molecules is in the order [IIT-JEE 1991]

    A) \[{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{4}}>{{C}_{6}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}\]

    B) \[{{C}_{2}}{{H}_{2}}<{{C}_{2}}{{H}_{4}}<{{C}_{6}}{{H}_{6}}<{{C}_{2}}{{H}_{6}}\]

    C) \[{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}>{{C}_{6}}{{H}_{6}}>{{C}_{2}}{{H}_{4}}\]

    D) \[{{C}_{2}}{{H}_{4}}>{{C}_{2}}{{H}_{6}}>{{C}_{2}}{{H}_{2}}>{{C}_{6}}{{H}_{6}}\]

    Correct Answer: B

    Solution :

      \[\underset{1.20{\AA}}{\mathop{{{C}_{2}}{{H}_{2}}}}\,<\underset{1.34{\AA}}{\mathop{{{C}_{2}}{{H}_{4}}}}\,<\underset{1.39{\AA}}{\mathop{{{C}_{6}}{{H}_{6}}}}\,<\underset{1.54{\AA}}{\mathop{{{C}_{2}}{{H}_{6}}}}\,\]


You need to login to perform this action.
You will be redirected in 3 sec spinner